RE46C800 Datasheet, PDF (1/24 Pages) Microchip Technology – Carbon Monoxide Detector Companion IC

RE46C800
Carbon Monoxide Detector Companion IC
Features:
• Low Quiescent Current
• Operation from 2V or 12V
• 9.8V Boost Regulator
• Horn Driver
• LED Driver
• 3.3V Regulated Voltage for Microcontroller
Operation
• Internal Operational Amplifiers:
- ±1 mV Input Offset Voltage
- Rail-to-rail Input and Output
- 10 kHz Gain Bandwidth Product
- Unity Gain Stable
• Bidirectional Alarm Interconnect
Applications:
• CO Detector
• Toxic Gas Detector
• Heat Detector
Description:
The RE46C800 is a low-power CMOS carbon monoxide
detector companion IC. The RE46C800 provides all of
the analog, interface, and power management functions
for a microcontroller-based CO or toxic gas detector. It
is intended for use in both 3V and 9V battery or battery-
backed applications. It features a boost regulator and
horn driver circuit suitable for driving a piezoelectric
horn, a 3.3V regulator for microcontroller voltage
regulation, an LED driver, an operational amplifier and
an IO for communication with interconnected units.
Package Types
RE46C800
SSOP
INP 1
20
INN ²
19
V_REF 3
18
OPOUT 4
17
9VDET 5
16
V_DD 6
15
ACDET 7
14
LEDEN 8
13
IO1 9
12
IO2 10
11
HRNEN
HB
HS
FEED
V_SS
LX
LEDPWR
V_BST
V_REG
IODIR
 2013 Microchip Technology Inc.
DS25172A-page 1